SPA-H钢冷弯开裂原因分析  

Analysis on Reasons Leading to Cold Bend Crack on Surface of SPA-H Steel Plate

作　　者：黄磊[1] 王晓峰[1] 杨静[1] 

机构地区：[1]鞍钢股份有限公司技术中心,辽宁鞍山114009

出　　处：《鞍钢技术》2013年第4期51-54,共4页Angang Technology

摘　　要：利用化学成分分析、力学性能检验以及金相组织分析等方法,对SPA-H钢板冷弯开裂现象进行了分析。结果表明,SPA-H钢板表面带状组织级别达到4级,表面分布大量球状氧化铝夹杂是造成冷弯开裂的主要原因。The reasons leading to cold bend cracks on the surface of a SPA-H steel plate are analyzed by such methods as chemical composition analysis, mechanical properties test and metal- lographic structure analysis. The analytical results show that the lamellar structure on the surface of the SPA-H steel plate is Level 4 which means that massive spherical alumina inclusions dis- tributed on the surface of the SPA-H steel plate are the principal reason leading to cold bend cracks.

关 键 词：SPA-H钢 缺陷 冷弯开裂 带状组织 氧化铝 

分 类 号：TG335[金属学及工艺—金属压力加工]